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68733885 = 3511616829
BaseRepresentation
bin1000001100011…
…00101110111101
311210100001011110
410012030232331
5120043441020
610453112233
71463141223
oct406145675
9153301143
1068733885
1135886870
121b028679
131131744c
1491b2b13
15607a8e0
hex418cbbd

68733885 has 32 divisors (see below), whose sum is σ = 121956480. Its totient is φ = 32774400.

The previous prime is 68733853. The next prime is 68733943. The reversal of 68733885 is 58833786.

It is a happy number.

It is not a de Polignac number, because 68733885 - 25 = 68733853 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6651 + ... + 13479.

It is an arithmetic number, because the mean of its divisors is an integer number (3811140).

Almost surely, 268733885 is an apocalyptic number.

It is an amenable number.

68733885 is a deficient number, since it is larger than the sum of its proper divisors (53222595).

68733885 is a wasteful number, since it uses less digits than its factorization.

68733885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6909.

The product of its digits is 967680, while the sum is 48.

The square root of 68733885 is about 8290.5901478725. The cubic root of 68733885 is about 409.6286246481.

Subtracting from 68733885 its reverse (58833786), we obtain a palindrome (9900099).

The spelling of 68733885 in words is "sixty-eight million, seven hundred thirty-three thousand, eight hundred eighty-five".

Divisors: 1 3 5 11 15 33 55 61 165 183 305 671 915 2013 3355 6829 10065 20487 34145 75119 102435 225357 375595 416569 1126785 1249707 2082845 4582259 6248535 13746777 22911295 68733885